Finding adiabatically bound anions of guanine through a combinatorial computational approach

Abstract

Enamine-imine transformations of guanine lead to tautomers that support valence anionic states which are adiabatically bound by as much as 8 kcal mol-1 (see scheme). The valence anions might be formed by dissociative electron attachment followed by attachment of a hydrogen atom to a carbon atom. Such tautomers might affect the structure and properties of DNA and RNA exposed to low-energy electrons. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.